Home / 20,704.01-28,372.48-18,711.10

Finding the Fourth Proportional to 20,704.01, 28,372.48 and 18,711.10

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Solution

The fourth proportional to 20,704.01, 28,372.48 and 18,711.10 is: 25,641.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,704.01 : 28,372.48 = 18,711.10 : x
  2. Step 2: Convert to fraction form
    20,704.01/28,372.48 = 18,711.10/x
  3. Step 3: Cross multiply
    20,704.01x = 28,372.48 × 18,711.10
  4. Step 4: Simplify right side
    20,704.01x = 530,880,299.22
  5. Step 5: Solve for x
    x = 530,880,299.22/20,704.01
  6. Step 6: Final answer
    x = 25,641.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.